Track-sanding mechanism.



. No. 887,884. I PATENTED MAY 19, 1908.

i r G. P. WHITE.

TRACK SANDINGYMBOHANISM. ABPLIGATIONTILEI) NOV. 27, 1907.

UNITED STATES P TEN'roFFroE- QHARLES P. WHITE, OF GREENSBORO, NORTH CAROLINA, ASSI GNOR OF ONE-THIRD TO EDWIN A. RIVES AND ONE-THIRD TO ARTHUR WILSON, OF GREENSBORO,-NORTH CAROLINA.

TRAGIGSANDING MECHANISM.

Specification of Letters Patent.

. Batented May 19, 1908.

Application filed November 27, 1907. v Serial No. 404,086.

citizen of the United States, residing at- Greensboro, in the county of Guilford and State of North Carolina, have invented a new and useful Track-Sanding Mechanism, of which the following'is a specification.

This invention relatesto track sanders of that classemployed on locomotivesfor sup plying sand to the rails, and has for its prin- 'cipal object to provide anovel form of pneumaticsander 1n which the construction is such as to prevent any clogging of the air blast pipe, this being one of the principal disadvantages found in pneumatic sanders of that type in which the air nozzle is dis-, posed within the sand box and covered by the sand.

A further object of the invention is to provide an apparatus of this class which may be readily applied to existing track sanders having the ordinary manually operated valve for controlling the gravitational flow of the sand from the box to the rails.

With these and other objects in view, as

will more fully hereinafter appear, the invention consists in certain 'novel features of construction and arrangement of parts, herep b an air dlscharge opening 21 facing the ininaft'er fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size and minor details of the structure may be made without departing from the spiritor'sacrificing any of the advanta es of the invention.

In tie accompanying drawin s :Figure 1 is a sectional elevation of a trac structed in accordance with the invention.

Fig. 2*is a plan view of the same, showing the tion, and preferably is closed at the top.

Leading from each .side of the box are pipes 11, whichrun down to a position adjacent to v the rails, these pipes being the ordinary pipes employed in connection with ravitational feed sanders Where a manually operable valve is under the control of the engineer. The pipe 11 is cut, and a -Y 12 is coupled sander contherein, and to one branch of'the Y 'isconnected an additional pipe 15 which forms the discharge pipe in the present instance.

To the top of the pipe 15 is 'coupled-aninlet 16 leading from the lower portion of the sand box, andthe inner portion of this inletis' provided with peripheral threads ad'a ted to a threaded opening formed in thewa l of the box. The inner end ofthe inlet is cut off approximately at an angle of 45 being at a somewhat greater angle than the angle of ,pile of thesand. The-sand will tend to flow by gravity out through the member 16, and to preventthadischarge of .sand to the track through this member, an upward curve or trap 17 is formed, at such distance from the side of .the box as will revent the'sand flowing by gravity throng the discharge pipe 15;

Leading into the sand box is an air pipe 18 which may be connected to the main air res he nipple 2O is..formed of a block having clined entrance end of the member 16, and

the opening is conical in'form, tapering from a large discharge mouth to a contracted throat through which the air is forced from the supply branch 19. The block 20 is provided with two threaded coupling openings 23 and 24, eitheriot which may be coupled to the air pipe 19 in accordance with the posi-.

,tion in which the parts are placed, and, in

the present instance, the opening 24 is shown as c osed by a plug, while the air pipe 19 .is screwed into the opening'23.

,As there would be some tendency of the sand to enter the nip le and'work its way into the air pipe, and 0 0g the same, the pipe has an upwardly extending bend or tra' 25 beyond which the sand cannot work, an under any circumstances only a small quantity of sand can accumulate in the nozzle, and

owing to the fact that the discharge mouth of the nozzle is of conical form, the sand will be quickly ejected even'though it is moist and; packed hard from the vibration of, the engine.

The axial line of the discharge mouth ot the nozzle is coincident withthe axial line of ward through box, or,

through the walls of the sand box, is substantiall horizontal, and the u per Wall of the sameis extended to form alip or shield 26 which tends to prevent the weight of the superposedsand from forcing the. sand into themouth of the discharge pipe.

- 1. In a pneumatic sander of the class described, an air blast pipe having an upwardly inclined terminal nozzle, the mouth of the nozzle beingconical or flared to permit the ready discharge. of accumulations of sand therefrom.

2. In a track sander of the class described, a

a discharge'pipe-having a couplingqconnection with the sand box, the inner end ofsaid connection being arranged obliquely to the vertical'wall of the pipe, the connection be ing upwardly bent in advance of its connection to the discharge pipe to prevent the escape of sand by gravity, an air blast pipe, and a nozzle arranged at the end of the air blast pipe, saidnozzle being. arrangedat an angle corresponding approximatelg; to the angle of the. inlet end of the connection, and the mouth of the nozzle being'flared or con-'. ical to ermit the discharge of accumulations of sand therefrom.

3. A pneumatic sander having a sand box overlapping lip charge near its ottom, and an air blast pipe having with which communicates an upwardly inclined .discharge pipe, and anair blast nozzle arranged within the sand box, spaced from and disposed to discharge into the mouthof the discharge pipe on a line axially of an adjacent portion of such discharge pipe.

4. A sander having a sand box, a discharge pipe communicating therewith near its bottom and having an inwardly projecting or or shield, and an upwardly inclined a r blast nozzle disposed within the sand box'to discharge air into the discharge pipe.

5'. A sander having .a sand box, a sand disipe communicating with the box a nozzle dis osed in the sand box to discharge axial y into the discharge pipe, said sand discharge pipe and air blast -pipe being provided near their opposing endswith up wardlyarched traps.

6. Asander having a sand box, a sand discharge ipe communicating with thebox near its bottom and provided adjacent thereto with an upwardly arched trap, or receiving end of the discharge pipebeing disposed substantially horizontal, and an air.v

blast pipe having its nozzle, arranged within thesand box to discharge obliquelyinto the mouth of the discharge pipe.

In testimony that D. L.'Bnooxs, F. G. WALKER.

the mouth Y I claim the foregoing as my own, I have hereto affixed myjsignature 

